Claude HUD through 0.0.12, patched in commit 234d9aa, contains a command injection vulnerability that allows local attackers to execute arbitrary commands by manipulating the COMSPEC environment variable. Attackers can set COMSPEC to an arbitrary binary path before claude-hud performs its version check, causing execFile() to execute the attacker-supplied executable with cmd.exe arguments, resulting in arbitrary code execution on Windows systems.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/jarrodwatts/claude-hud/commit/234d9aad919b51326a43bcf90b45ae35c23afc30 Patch
- https://github.com/jarrodwatts/claude-hud/pull/487 Issue Tracking, Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.3 · jarrodwattsNVD modified 2026-10-26 13:10
Affected (CPE criteria) 1
cpe:2.3:a:jarrodwatts:claude_hud:*:*:*:*:*:claude_code:*:*
References 4
- https://github.com/jarrodwatts/claude-hud/commit/234d9aad919b51326a43bcf90b45ae35c23afc30 Patch
- https://github.com/jarrodwatts/claude-hud/issues/485 Issue Tracking
- https://github.com/jarrodwatts/claude-hud/pull/487 Issue Tracking, Patch
- https://www.vulncheck.com/advisories/claude-hud-arbitrary-command-execution-via-comspec-environment-variable Third Party Advisory